应用于小电流接地电网单相接地故障定位的探测器节点设计

Single-phase to Earth Faults Location in Small Current Neutral Grounding System by S-injection Method Combining with Wireless Communications

配电网中小电流接地系统单相接地故障的快速精确定位,一直是困扰配电系统自动化的难点。本文在分析S注入法在故障定位的应用效果基础上,提出结合无线通信设计的故障探测节点来实现小电流接地系统的单相故障定位。介绍了基于故障探测器节点的定位实现原理,并针对配点线路特点,提出了探测器的供电方式﹑信号采集﹑通信频率等关键问题的解决办法,并实现了探测器节点的硬软件设计。

How to locate the single-phase to earth faults in small current neutral grounding system of distribution system is a problem to actualize distribution automation.Based on the applications of S-injection method in the fault location,this paper proposes to implement the single-phase to earth faults location in small current neutral grounding system via the exploration detector combining with wireless communications.In the paper,fault location principle based on wireless detector is introduced,issues such as p...